Ohio CDL Doubles And Triples Endorsement Test Practice Questions - Ohio CDL Doubles And Triples Endorsement Test Exam

What must happen before trying to move a newly coupled doubles combination?

Trailer air tanks must build enough pressure before trying to move the combination. spring brakes release without air dragging brakes are harmless air pressure is only for lights

Correct Answer:

Trailer air tanks must build enough pressure before trying to move the combination.

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